Skiving-machine.



A. M. ALEXANDER.

SKIVING MACHINE.

APPLICATION FILED NOV. s. 1913.

1,169,660. Patented Jan. 18, 1916.

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A. M. ALEXANDER.

SKIVING MACHINEx APPLICATION FILED NOV. 3. 1913.

1,169,060. I Patented Jan.18, 1916.

4 SHEETS-SHEET 2- 10%:86688 JfTa (Jena 507 @mM/W 0, M l1 a Z a GM Qua/v?QWYM THE COLUMBIA PLArjonnAPn cO., WASHINGTON, n. c.

A. M. ALEXANDER.

SKIVING MACHINE.

APPLICATION FILED NOV. 3, 1913.

1,169,060, Patented Jan. 18, 1916.

4 SHEETSSHEET 3.

THE COLUMBIA PMNOGRAPH c0.. WASHINGTON, D. c.

A. M. ALEXANDER.

SKIVING MACHINE. APPLICATION FILED NOV. 3, 1913.

Patented Jim. 1916.

4 SHEETS-SHEET 4 Mnesses fi/ai $5 76%. 777% THE COLUMBIA PLANOGRAPH CD-,WASHINGTON, D. C.

STES Penn ALEXANDER IVL ALEXANDER, OF BEVERLY, MASSACHUSETTS, ASSIGNORTO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATIONOF NEW JERSEY.

SKIVING-MAGHINE.

Specification of Letters Patent.

Application filed November 3, 1913. Serial No. 798,935.

0 all whom. it may concern Be it known that I, ALEXANDER M. ALEX- moan,a citizen of the United States, residing at Beverly, in the county ofEssex and State of Massachusetts, have invented certain new and usefulImprovements in Skiving-Machines; and I do hereby declarethe followingto be a full, clear, and exact de scription of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

The present invention relates toskiving machines adapted for skiving theedges of leather for use in the manufacture of boots and shoes, or forskiving the edges of other materials for use in various arts.

The object of the invention is to provide a machine having, a novel andimproved construction which will enable the work to be more accuratelyand rapidly done than heretofore and with less skill and care on thepart of the operator and with less danger of injury to the work or tothe operator.

The machine within which the invention has been embodied comprises acylindrical skiving knife, :1 work supporting feed roll which isarranged in fixed positionbelow the knife and the position of which,-with relation to the knife, determines the angle and depth of theskiving, a yielding presser which holds the work against the peripheryof the feed roll directly in front of the knife edge, an edge gage forguiding the work and a feed disk which cotiperates with the end of thefeed roll in feeding the work and also acts as a guard between the knifeand the work.

In machines in which the work is presented to the skiving knife by afixed feed roll and a cooperating presser, it is important to thesuccessful operation of the machine that the edge of the knife travelclose to the presser and over the center of the roll and that there beproper clearance for the passage of the work between the periphery ofthe roll and that part of the knife directly back of its cutting edge.These conditions are secured in accordance with one feature of thepresent invention by the use of at cylindrical knife mounted to turnabout an axis which. is upwardly inclined in the direction of the feed.This not only enables the edge of the knife to travel in the planepassing through the axis of the-roll andclose to the presser, but alsoenables the properclearupon the work .roll, )resser foot and feed diskance tobe secured back of the cutting edge, even when the bevel of theknife edge is ground on the outsideof the knife.

"In accordance with another feature of the lnvent-lon, variation in theangle of the ,skiving is secured by adjustment of the feed rolltransversely of the line of feed and provision is made for simultaneousadjustment of the presser,edge gage and feed disk so that the relationof these parts to each other .is not disturbed by adjustments tosecurethe ClGSlIGfl angle of sklving. Provision is also made forindependent adjustment of the edge gage and presser with relationto thefeed roll to vary the thickness of-the skived edge of the work.

The invention also includes a novel construction of feed roll whichenables a roll to be readily removed and replaced by another ofdifferent size, or better suited to the work to be performed.

The invention also includes a novel chip ejector for dischargingskivings from the interior of the knife and also various other featureswhich are hereinafter described and set forth in the claims.

The various features of the invention will be readily understood from aninspection of the accompanying drawings and the following detaileddescription of the machine shown therein.

In the drawings, Figure 1 is a front elevation of the machine embodyingthe features of the invention in their preferred form;

.means for securing it to the'feed shaft; Fig.

3 is a left endelevation, partly in section, on a somewhat larger scalethan Fig. 1; Fig. 4 is a plan view; Fig. 5 is a partial front elevationshowing the parts which act directly Fig. 6 is a detailed sectionalelevation through the aXis of the knife; Figs. 7 and 8 are detailedsectional elevations showing the manner in which the feed present theedge of the work of the knife; Fig. 9 is a detailed endelevation of thepresser foot and Fig. 10 isa plan view of the presser'foot and edgegage.

In the machine shown in the drawings, the work is supported and fed to acylindrical skiving knife 1 by a feed roll '2 arranged be- "low theknife and having a curved periphery correspond ng to the curvature ofthe 7 arranged to travel over the center of the feed roll and the knifeis mounted to rotate about an axis which is inclined upwardly in thedirection of the feed, so that there is adequate clearance between theperiphery of the roll and the beveled surface directly back of thecutting edge of the knife. The feed roll is provided with a cylindricalend portion smaller in diameter than the curved portion which cooperateswith the knife edge and a feed disk 3 is arranged to cooperate with thecylindrical end of the roll in feeding the work. The edge portion of thework which is to be skived is pressed uniformly against the fed rolldirectly in front of the knife edge by a presser foot 4 which is mountedto yield bodily to accommodate itself to the thickness of thestock andto yield angularly to accommodate itself to stock, the edge portion ofwhich is more or less beveled or of uneven thickness. The work is guidedby an edge gage 5 against which the edge of the stock travels as it isfed against the knife edge.

In the construction shown, the knife 1 is in the form of a thin metalblade fitting within a cylindrical knife support 6 and secured to acarrier '7. The knife support 6 is secured to the flange 8 of a hollowshaft 9. by a series of bolts 10 which also project through holes in thecarrier 7 and hold it against rotation with relation to the knifeholder. The hub of the carrier 1 is threaded to engage a screw threadformed on the head 11 of a sleeve 12 which passes through the hollowshaft 9. A clamping disk 13 is mounted on the end of the head 11 and itsouter edge fits within the knife blade 1. The clamping disk may besprung inward so that its edge presses against the "knife and clamps itagainst the holder 6 by a flanged plate 14 secured to the end of a rod15 which passes through the sleeve 12. During the running of themachine, the parts described are clamped together and rotated as onepiece. The knife carrying shaft 9 is mounted in a rearwardly inclinedbearing bushing 16 which is secured in a vertically adjustable head 17The head is guided in vertical ways 18 and may be ad-.- justedvertically by an adjusting screw 19 to bring the lower edge of the knifein proper position with relation to the feed roll 2.

The knife is continuously driven during the operation of the machinethrough a pulley '20 which is keyed on the rear end of the sleeve 12.The front end "of the bore in the 'hub 21 of the pulley is provided witha conical surface 24 which is adapted to engage a similar surface on therear end of the shaft 9. The hub 21 of the pulley is engaged "by the hub22 of a hand wheel 23 which is :screwed on the rear end of the rod 15and serves to draw the plate 14 against the the driving shaft 32.

against rotation by passing a pin through '2 the hole 25 in the casing26 which surrounds the knife support and into a hole 27 formed in theknife support. The hand wheel 23 is then turned to release the plate 14and clamping disk 13 and to free the hub of the pulley 20 from the endofthe shaft 9. The pulley 20 is then turned to 1'0- "tate the sleeve 12and screw threaded head 11 and thus move the knife carrier 7 to bringthe edge of the knife into the proper position. The hand wheel 23 isthenturned to clamp the parts'firmly in adjusted position and reconnectthe pulley 20 with the end of the shaft 9.

The pulley 20 is driven through a belt 28 which passes about the pulley,over guide pulleys 29 and 30 and about a pulley 31 on The guiding pulley30 is mounted upon aneccentric which may be adjusted by a lever 33 tokeep the belt under proper tension.

The Work supporting feed roll 2, in the construction shown, comprises acomparatively thin metal shell provided with a conical bore 34 whichfits the conical periphery of aflange or head 35 formed on the feed.roll shaft 36. I The outer end of the feed roll is provided with arecess 37 which is larger in diameter than the bore 34 so that ashoulder is formed at the outer end of the bore. The roll is forced ontothe conical head 35 so that it is firmly clamped to the shaft by asecuring plate 38-f1tting within the recess 37 and forced toward the endof the head 35 by a screw 39. Then the roll is to be removed, the screw39 is removed and the taper on the head 35 is such that the roll may bereadily removed from the end of the shaft.

This construction not only enables the rolls to be readily removed andreplaced, but also enables rolls of different widths to be secured tothe end of the shaft in proper relation to the knife and feed disk.

The roll carrying shaft 36 is mounted in the inclined bearings 40 andmay be moved longitudinally to adjust the feed roll laterally and thusvary the angle between the periphery of the roll and the edge of theknife, and consequently the angle of the skiving. As shown, the shaft isthus ad justed through a shaft 41, the outer end of which carries awheel 42 and the inner end of which carries a pinion 43 engaging a rackformed on a block 44 which is mounted the shaft 36 between the twocollars45,

The feed, roll shaft driven :Eriii'the dr ting shaft 32" thfbi l gli a)shaft A6, one end (if which is connected with" the drivingshaft througha' wormf fland worin' wheel a8, and

shaft 86' through spiral gears 49.

The feed disk 3 is secured "to the lower 'end of thehub50 of the wormwheel 51 which is mounted" to" turn in a be'aring block 52 formed on thefrohtend of a rock sleev'e 53 which is mounted in bearings formedin asupporting a'rni'54c. The" worm wheel 51 is eiig'aged by a worm securedto'the front end of the slia ft56 which passes through the rock sleeveand has a" pulley 57 secured to its rearen'd. The shaft is continuouslydriven by a belt '57 passing over the pulley 5'? and over a pulleyformed on the hub '21 of the pulley 20. The rock sleeve 53 is forced ina direction to press'thefe'ed disk against the feed roll by a spring 58mounted in an annular recess formed in a'col'lar 59 which is clamped tothe rock sleeve 53.

One end of the spring 58 bears against a pin carried by the collar 59and the other end bears against a pin carried by a disk 60 which isloosely mounted on the rock sleeve and is held in adjusted position by aspring latch 61 which engages a fixed ratchet wheel 62. loosely mountedon the rock held in fixed positionby a holdingscrew 63. By adjustingthe" disk 60 about the ratchet wheel 62, the tension onzthe spring 58may be adjusted so that the feed disk will be applied to the work withproper ressure The movement of the feed disk under the influence of thespring is limited by a stop arm 64' which projects from the collar 59into position to engage the arm 54.

In order that the feed roll may be adjusted to vary the angle of theskiving without disturbing the relation betweenthe feed roll and feeddisk, the arm 54: which supports the feed disk is. pivotally supportedand is so connected with the mechanism for adjusting the feed rolllaterally that the teed roll and feed disk are moved in unison when thefeed roll is adjusted. As shown, the rear end of the supporting arm 5%is supported by a vertical'pivot bolt 65 which is mounted to turn in abearing 66 formed on an arm 67 which projects from the cutter carryinghead 17. The arm 5% is swung about its pivotal support through a link68, one end of which is connected by a universal joint with the arm 5%and the other end of which is connected by a universal oint with a rod(39 mounted to slide in the frame of the machine. The rod 69Lcarries apin 70 engaging a pivot block 71 which is mounted to slide between theribs 72 formed on a lever 73, the lower end of which is connectedwiththe block at byga pin and pivot block 74; Through these-connectionsthe arm 54:

sleeve and is The ratchet wheel is eenagers feed disk is moved amaintain the feed disk iii-fixed relation to the feed roll when the feedroll is adjusted to vary the angle of theskivin'g; The feed disk maycorrespond to, the curvature of the kniite edge and of the feedroll. Thepresser foot ispiovided"with a shank 76 by which it ispi'rotalljyc'onnected to the low end of supporting arm 77 so that thefoot may turn to vary its angular relation to the surface of the feedroll in accordance with the character of the material being operatedupon. The resser foot is held'yieldingly in positien wi'th its workengaging face parallel to the'edge'ofthe knife by a spring-pressedplunger 78 which is mounted in a recess in the ari'n 7'7 and bearsagainst the" shank 76.

The normal position of the presser foot with relation to the knife edgeis determined by a stop shoulder 79' on-tho shank of the presser tootwhich is arranged to engagea stop surface 80 onthe arm 77. The arm 77 iscured to apivot-pin 81 which is mounted in the lower end of a verticallymovable slide 7.

8-2 The slide 82 is mounted in a recess formed'in the front plate 83 ofa guard 84: which is hinged to the knife casing 26 and overlies andprotects the greater part of the l-mife edge. an upwardly extending rod85 which passes up through a hearing 86 and is surrounded by a spring'87 interposed between the lower end of the bearing 86 and the slide 82so that it holds the slide yieldingly in its lowered position. Thenormal position of the slide determined by the adjustable nuts 88screwed onto the upper end of the rod 85 and arranged to engage theupper end of the bearing 86. The springpressed slide 82 tlius'su'pportsthe presser foot so that it may yield bodily upward in accordance withthe thickness of the stock passing between it and the feed roll.- Thepivotal support for the arm 77 enables the presser foot to be adjustedlaterallyin accordance with the position oithe feed roll 2 or tocooperate with any part of the curved portion of the periphery of theroll. The axis of the pivotal support is preferably arranged in the aXisof the knife so that the parallel relation between the work engagingface of the presser foot and the knife edge is not disturbed by the Ilateral adjustment of the presser foot.

The slide 82 is provided with The edge guide 5 is in the forino'r' afinger projecting upwardly from the end of a curved arm 89, the lowerend of which is provided with a rearwardly projecting bracket 91 andslotted to straddle the clamping screw 92. The curvature of the arm 89is substantially the same as the curvature of the feed roll and the freeend of the arm is arranged to lie close to the periphery of the feedroll, as indicated in either Fig. 7 or Fig. '8. In this construction,the supports ,for the edge gage are arranged so that they I leave a freeand unobstructed space at the right of the edge gage, thus permittingthe work to swing freely around the edge gage. -This enables the edgesof the stock having sharp, reentrant angles to be accurately anduniformly skived without requiring the special and careful manipulationof the stock necessary in machines in which the free swing of the workabout the edge gage is obstructed.

It is desirable that the edge gage should be located close to thecutting edge of the knife, and it is also important that the presserfoot should hold the stock against the feed roll at its edge. It is alsodesirable that the presser foot should be adjusted laterally with theedge gage when the gage is adjusted with the feed roll or relative tothe feed roll. In order to secure these results, the presser foot isprovided near its end with a slot, or recess 93 which embraces the edgegage 5. The part of the presser foot which isiadjacent to the edge. gageis also extended rearwardly and curved upwardly, as indicated-at 94: inFig. 9, to overlie the edge of the knife. This enables the edge gage tobe brought close up to the edge of the knife and also holds the extremeedge of the stock in position to be accurately directed and fed againstthe edge of the knife.

' In order that the position of the edge gage with relation tothe worksupporting part of the feed roll mav be varied in accordance with thecharacter of the skiving, the bracket 91, which carries the edge gage,is provided with a segmental rib 95 on its rear side, which engages acurved guideway 96 formed on the support 97. The curvature of theguideway 96 corresponds to the curvature of the knife edge and of theperiphery of the feed roll so that the edge gage follows the peripheryof the feed roll as it is adjusted, for instance, from the positionindicated in Fig. 7 to the position indicated in Fig. 8.

The bracket 91 is secured in adjusted position by a clamping screw 98.

In order that the edge gage and presser foot may move with the feed roll2'as it is adjusted to vary the angle of the skiving, the support 97,upon which the edge gage is mounted, is connected to move with the feedroll shaft when it is moved longitudinally. As shown, the support 97 ismounted upon a cylindrical projection 99 formed on the bearing 40 and isprovided with a bore 100 beyond the end of the projection 99 which fitsabout the shaft 36. The support is congrinding wheel into or out ofnected to move with the shaft by a collar 101 which is secured to theshaft in position to maintain the end of the support in engagement withthe head 35 on the shaft. The support is held from rotation with theshaft by a securing screw 102, the end of which is arranged to enter aslot 103 formed in the cylindrical projection 99. This, screw also actsas a clamping screw for holding the shaft in position after it has beenadjusted longitudinally to bring the feed roll into the desired positionwith relation to the knife.

The skivings or chips removed from the edge of the stock by the skivingknife are discharged or ejected from the interior of the knife by anejector roll 104 which is mounted to turn about an axis inclined to thedirection of travel of the interior surface of the knife. The roll ispreferably provided with a substantially cylindrical portion 105arranged to lie close to the inner surface of the knife and with aconical front portion 106 under which the chipsor skivings may readilypass and which will direct them to the cylindrical portion of the roll.As shown, the roll is mounted on the inner end of a lever 107 which ispivoted to the guard 84 and is held in normal position by a spring 108.chips'or ski'vings which are carried around inside of the knife passbetween the inner surface of the knife and the roll 105 and cause theroll to turn. upon its axis. Since the roll is arranged to turn about anaXis which is inclined to the direction of the travel of the knife, itsrotation will throw the chips forward and discharge them through theopen end of the knife.

In order that the knife may be conveniently sharpened as required, themachine is provided with a grinding wheel 109 which may be moved into orout of engagement with the knife. The grinding wheel is secured upon thelower end of the shaft 110 which is mounted in one arm of a lever 111.The other arm of the lever carries a pin 112 which engages a radial slotformed in an arm 113 which is secured to the inner end of a rock shaft114. The outer end of the rock shaft carries a hand wheel 115 by whichthe operator may rock the shaft to throw the engagement with the knife.The grinding wheel is driven through a belt 116 which passes over apulley 117 on the grinding wheel shaft 110 and over a pulley 118 whichis loosely mounted on a shaft 119.- The pulley 118 is provided with aclutch member 120 adapted to be engaged by'a clutch member 121 on theshaft 119. The guide pulley 29 for thecutter driving belt 28 is securedto the shaft 119 and acts as a driving hen the grinding wheel is out ofactive position, the clutch members 120 and 121 are out of engagement sothat the grinding In this construction, any

pulley for the shaft.-

rior 0f the knife when desired.

leases the clutch operating lever 123 so that the clutch members areagain disengaged.

A guard plate 124 may be arranged back of the cutting point to preventthe chips or skivings from commg forward into position to interfere withthe proper guiding and feeding of the work. When used, this guard ispreferably formed of celluloid or other transparent material so that itwill not obstruct the view of the OPem O The guard 84 which supports thepresser foot and the chip ejector is hinged to the knife casing 26 bythe pivot 125 so that it may be swung up to give access to the inte-\Vhen swung down into position, it is'h'e'ld by a latch 126. i I

' lVhile it is preferred to employ the specific construction andarrangement of the parts shown and described, it isto be under- ,stoodthat this construction and arrangement is not essential to the broaderfeatures of the invention and may be varied and modified as founddesirable or best suited to the construction of machine in which theinvention is to be embodied.

Having explained the nature and object v of the invention andspecifically described ,work-engaging surface of the work support.

2. A skiving machine having, incombination, a work supporting feed roll,a presser, and a cylindrical skiving knife above the roll mounted torotate about an axis inclined upwardly with relation to the direction ofthe feed. I I

3. A skiving machine having, in combination, a cylindrical skiving knifemounted to rotate about an axis inclined to the direction of feed, afeed roll mounted below the knife in rigid relation thereto to determinethe angle of skiving, and a presser foot mounted to yield bodily andangularly with relation to the periphery of the, roll.

4. A skiving machine having, in combination, a cylindrical skivmg knife,a feed roll mounted below the knife 1n rigid relation thereto todetermine theangle of the skiv- I ing, and a presser above the rollmounted to yield bodily and angularly with relation to the periphery ofthe roll.

5. A skiving machine having, incombination, a cylindrical skiving knife,a feed roll below the knife, 21- cooperating feed disk, a presser abovethe roll, and means for adjusting the feed roll laterally to determinethe angle of the skiving and for moving the disk and presser with thefeed roll.

6. A skiving machine having, in combination, a. cylindrical skivingknife, a feed roll below the knife, a presser above the feed roll, meansfor vertically adjusting the knife to determine the depth of skiving,and means for laterally adjusting the feed roll and presser to determinethe angle of the skiving.

7. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved vtocorrespond to the curvature of the knife edge, a cooperating feed disk,a presser foot above the feed roll, an edge gage, means for adjustingthe knife over the center of the feed roll and for adjusting itvertically,

and means for adjusting the feed roll, edge gage and feed disk laterallyto vary the angle of the skiving.

8. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved tocorrespond to the curvature of the knife edge, a presser above the feedroll having a work engaging surface curved to correspond to thecurvature of the knife edge and mounted for angular movement withrelation to the periphery :of the feed roll, and means for yieldinglyholding the presser against angular movement and movement away fromthefeed roll.

9. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife, a cooperating feed disk, a presserabove the feed roll, an edge gage, means for adjusting together the feedroll, disk, presser and edge gage laterally to vary the angle of theskiving, and means for adjusting the presser and edge gage laterallywith relation to the roll.

10. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved tocorrespond to the curvature of the knife edge, and mounted to rotate onan axis, a presser abovethe roll mounted to yield bodily and angularlywith relation to the periphery of the roll, and means for adjusting theroll transversely to vary the angle of the skiving.

11. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved tocorrespond to the curvature of the knife edge, a shaft carrying theroll, means for adjusting the shaft longitudinally to vary the angle ofskiving, a presser above the feed roll, a feed disk, and an edge gage.

12. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll mounted below the knife in rigid relation thereto todetermine the angle of skiving, an edge gage, and a yielding presserabove the roll having a surface extending over the knife edge adjacentto the edge gage.

13. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved tocorrespond to the curvature of the knife edge, and a presser above theroll mounted for adjustment in a curved path parallel to the knife edge.a

let. A skiving machine having, in combination, a skiving knife, a feedroll, an edge gage, and a presser foot provided with a slot embracing aportionof the edge gage.

15. A skiving machine having, in combination, a skiving knife, a feedroll, an edge gage formed on a downwardly curving arm, a support for thearm arranged below the knife to leave an unobstructed space between thearm and knife edge, and a presser foot for pressing the work against thefeed roll.

16. A skiving machine having, in combination, a cylindrical skivingknife, a feed roll below the knife having a periphery curved tocorrespond to the curvature of the knife edge, an edge gage, means foradjusting the edge gage with relation to the feed roll, and a pressermounted for movement in a path substantially parallel to the knife edgeand provided with a slot embracing a ortion of the ed e a e.

17. A skiving machine having, in combination, a feed roll, a presser, acylindrical knife above the feed roll, a head provided with a casingpartially surroundingthe knife, and a guard plate pivoted to the casingand overlying th front of the knife.

18. A skiving machine having, in combination, a skiving knife, a feedroll, a coopcrating feed disk, a movable support for the disk, and meansfor adjusting the feed roll laterally to vary the skiving and for movingthe support in unison with the roll.

19. A skiving machine having, in combi nation, a skiving knife, a feedroll, a coopverating feed disk, a shaft carrying the feed roll, a.pivoted supporting arm carrying the feed disk, means for moving theshaft longitudinally to adjust the feed roll transversely, andconnections between the shaft and arm for moving the disk in unison withthe roll.

20. A skiving machine having, in combination, a skiving knife, a feedroll having a taper bore, a feed roll shaft having a head provided witha taper surface fitting the bore, devices for forcing the roll onto thetaper surface of the head and maintaining it in position, and a pressercooperating with the roll to feed the stock against the knife edge. i

21. A skiving machine having, in combination, a skiving knife comprisinga thin shell, a feed roll below the knife having a taper bore, a feedroll shaft having a head provided With a taper surface fitting the bore,devices for removably holding the roll in frictional engagement with thetaper surface on the shaft, a presser above the roll, and an edge gage.

22. A skiving machine having, in combination, a skiving knife, a'feedroll shaft below the knife provided Witha head having a taper periphery,a feed roll having a taper bore fitting the head,

with the head, a presser above the roll, and an edge gage.

' 23. A skiving machine having, in combination, a cylindrical skivingknife, means an independently rotating ejector arranged to cooperatewith the interior surface of the knife in discharging the skivings.

24:. A skiving machine havlng, 1n combinatlon, a cylindrical skivingknife, means "for presenting the stock to the knife, and a rotaryejector havinga chip engaging surface close to'the inner surface of theknife ejector roll arranged close to the inner surface of the knife withits axis oblique to the direction of travel of the knife.

26. A skiving machine having, in combination, a cylindrical skivingknife, means for presenting the stock to the knife, an ejector rollarranged close to the inner surface of the knife with its aXis obliqueto the direction of travel of the knife, and a yielding support for theroll.

27. A- skiving machine having, in combination, a cylindrical skivingknife, means for presenting the stock to the knife, and an ejector rollmounted within the knife with its aXis oblique to the direction oftravel of the knife and having a cylindrical surface and a conical frontend. I 28. A skiving machine, having, in combination, a skiving knife, afeed roll mounted in rigid relation thereto to determine the angle ofthe skiving, a presser foot above the roll mounted to yield bodily andangularly with relation to the periphery of the roll, a spring forresisting angular movement, and a spring for resisting bodily movementof, the presser.

29. A skiving machine, having, in combination, a skiving knife,-a feedroll mounted devices for removably holding the roll in frictionalengagement for presenting the stock to the knife, and

in rigid relation thereto to determine the angle of the skiving, apresser foot above the roll, a yielding support on which the presserfoot is pivoted and a spring for resisting movement of the foot aboutits pivot.

30. A skiving machine, having, in combi nation, a skiving knife, a feedroll mounted in rigid relation thereto to determine the angle of theskiving, a presser foot above the Gopies of this patent may be obtainedfor five cents each, by addressing the Commissioner of Patents,

r011, an edge gage, a yielding support to 10 which the presser foot 1spivoted, and a spring between the support and foot for pressing the endof the foot adjacent to the edge gage toward the feed roll.

ALEXANDER M. ALEXANDER. WVitnesses:

LILLIAN B. DUPEE, CHESTER E. ROGERS.

Washington, D. 0.

It is hereby certified that in Letters Patent No. 1,169,060, grantedJanuary 18, 1916, upon the application of Alexander M. Alexander, ofBeverly, Massachusetts, for an improvement in SkiVing-Machines, errorsappear in the printed specification requiring correction as follows:Page 1, line 102, for the Word of, second occurrence, read to; page 2,line 16, for the word fed read feed; same page, line 34, for the numeral1 read 7; page 6, lines 71-72, strike out the words comprising a thinshell, same page and claim, line 72, after the Word "knife insert thewords comprising a, thin shell; and that the said Letters Patent shouldbe read with these corrections therein that the same may conform to therecord of the case in the Patent Ofiice.

Signed and sealed this 7th day of March, A. D., 1916.

J. T. NEWTON,

Acting Comm'issz'oner of Patents.

